<template>
    <el-container class="home_container">
        <el-header>
            <div>
                <img src="../assets/heima.png" alt="">
                <span>电商后台管理系统</span>
            </div>
            <el-button @click="logOut" type="info">退出</el-button>
            </el-header>
            <el-container>
                <el-aside :width="isCollapse ? '64px' : '200px'">
                    <div class="toggle-button" @click="toggleCollapse">|||</div>
                    <el-menu background-color="#333744" text-color="#fff" active-text-color="#409eff" unique-opened 
                        :collapse="isCollapse" :collapse-transition="false" router :default-active="activePath">
                        <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
                            <template slot="title">
                                <i :class="iconsObj[item.id]"></i>
                                <span>{{item.authName}}</span>
                            </template>
                            <el-menu-item :index="'/'+i.path" v-for="i in item.children" :key=i.id @click="saveNameState('/'+i.path)">
                                <template slot="title">
                                    <i class="el-icon-menu"></i>
                                    <span>{{i.authName}}</span>
                                </template>
                            </el-menu-item>
                        </el-submenu>                
                    </el-menu>
                </el-aside>
                <el-main>
                    <router-view></router-view>
                </el-main>
             </el-container>
    </el-container>
</template>

<script>
export default {
    data() {
        return {
            menulist: [],
            iconsObj: {
                '125': 'iconfont icon-user',
                '103': 'iconfont icon-tijikongjian',
                '101': 'iconfont icon-shangpin',
                '102': 'iconfont icon-danju',
                '145': 'iconfont icon-baobiao'
            },
            isCollapse: false,
            activePath: ''
        }
    },
    created() {
        this.getMenuList();
        this.activePath = window.sessionStorage.getItem('activePath')
    },
    methods: {
        logOut() {
            window.sessionStorage.clear();
            this.$router.push('/login');
        },
        async getMenuList() {
            const { data: res } = await this.$http.get('menus')
            if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
            this.menulist = res.data
        },
        toggleCollapse() {
            this.isCollapse = !this.isCollapse
        },
        saveNameState(activePath) {
            window.sessionStorage.setItem('activePath', activePath)
            this.activePath = activePath
        }
    }
}
</script>

<style lang="less" scoped>
.home_container {
    height: 100%;
}
.el-header {
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #fff;
    font-size: 20px;
    > div {
        display: flex;
        align-items: center;
        span {
            margin-left: 15px;
        }
    }
}
.el-aside {
    background-color: #333744;
    .el-menu {
        border-right: none;
    }
}
.toggle-button {
    background-color: #4a5064;
    font-size: 10px;
    text-align: center;
    line-height: 24px;
    color: #fff;
    letter-spacing: 0.2em;
    cursor: pointer;
}
.el-main {
    background-color: #eaedf1;
}
.iconfont {
    margin-right: 10px;
}
</style>